Jan W. Speerger
- Umutwe: Jan W. Speerger
- Icyamamare: 1.859
- Azwiho: Acting
- Isabukuru: 1896-04-29
- Aho yavukiye: Adamov, Ceské Budejovice District, Bohemia, Austria-Hungary [now Czech Republic]
- Urupapuro rwitangiriro:
- Birazwi kandi: Ян В. Спеэргер, Ян Вацлав Спеэргер, Ян В. Спеергер